Thermal stability of nanoparticle supported on Al2O3 with different morphologies

Al2O3 nanocrystals with four various morphologies have been synthesized and used to support Pt nanoparticles and their structural stabilities under high temperature treatment were tested. The results show that Pt supported on a novel coral-like Al2O3 sample synthesized by methanol solvothermal metho...

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Bibliographic Details
Published in:Materials research express 2019-07, Vol.6 (9)
Main Authors: Zhang, Wei, Lei, Jing, Sui, Zhi-Jun, Zhu, Ka-Ke, Zhu, Yi-An, Zhou, Xing-Gui
Format: Article
Language:English
Subjects:
alumina
morphology
supported particles
thermal stability
Online Access:Get full text
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Summary:Al2O3 nanocrystals with four various morphologies have been synthesized and used to support Pt nanoparticles and their structural stabilities under high temperature treatment were tested. The results show that Pt supported on a novel coral-like Al2O3 sample synthesized by methanol solvothermal method showed the highest thermal stability due to the strongest interaction between Pt and the support. But the Pt nanoparticles diameters of all the samples tend to be bimodal distributed, centered around 1-3 and 10-20 nm, which is mainly because the different content of coordinatively unsaturated pentahedral Al3+ sites.
ISSN:2053-1591
DOI:10.1088/2053-1591/ab3092